Journal article (2006) - HE Hulshoff Pol (author), HG Schnack (author), U Bürgel (author), K Zilles (author), E de Geus (author), DL Boomsma (author), RS Kahn (author), D Posthuma (author), RCW Mandl (author), WF Baaré (author), CJ van Oel (author), Clarine van Oel (author), Clarine J. van Oel (author), C.J. van Oel (author), NE van Haren (author), DL Collins (author), AC Evans (author), K Amunts (author)